<template>
	<view class="goods-item">
	  <!-- 商品左侧图片区域 -->
	  <view class="goods-item-left">
			<radio color="#c00000" :checked="goods.goods_state" v-if="showRadio" @click="handler_radioClick" />
	    <image :src="goods.goods_small_logo || defaultPic" class="goods-pic"></image>
	  </view>
	  <!-- 商品右侧信息区域 -->
	  <view class="goods-item-right">
	    <!-- 商品标题 -->
	    <view class="goods-name">{{goods.goods_name}}</view>
	    <view class="goods-info-box">
	      <!-- 商品价格 -->
	      <view class="goods-price">￥{{goods.goods_price | tofixed}}</view>
				<!-- 商品数量 -->
				<uni-number-box :min="1" :value="goods.goods_count" v-if="showNum" @change="numChangeHandler"></uni-number-box>
	    </view>
	  </view>
	</view>
</template>

<script>
	export default {
		props: {
			// 商品的信息对象
			goods: {
				type: Object,
				default: {}
			},
			// 控制是否显示单选按钮
			showRadio: {
				type: Boolean,
				default: false		// 如果外界没有指定 show-radio 属性的值，则默认不展示 radio 组件
			},
			// 是否展示价格右侧的 NumberBox 组件
			showNum: {
			  type: Boolean,
			  default: false,		// 默认不显示
			},
		},
		data() {
			return {
				// 默认的空图片
				defaultPic: 'https://img3.doubanio.com/f/movie/8dd0c794499fe925ae2ae89ee30cd225750457b4/pics/movie/celebrity-default-medium.png'
			};
		},
		methods: {
			handler_radioClick() {
				this.$emit('radio-change', {
					// 商品的 Id
					goods_id: this.goods.goods_id,
					// 商品最新的勾选状态
					goods_state: !this.goods.goods_state
				})
			},
			numChangeHandler(val) {
				this.$emit('num-change', {
					// 商品的 Id
					goods_id: this.goods.goods_id,
					// 商品的最新数量
					goods_count: +val
				})
			}
		},
		// 过滤器
		filters: {
			// 把数字处理为带两位小数点的数字
			tofixed(num) {
				return (num - 0).toFixed(2)
			}
		}
	}
</script>

<style lang="scss">
.goods-item {
  display: flex;
  padding: 10px 5px;
  border-bottom: 1px solid #f0f0f0;

  .goods-item-left {
    margin-right: 5px;
    display: flex;
    justify-content: space-between;
    align-items: center;
  
    .goods-pic {
      width: 100px;
      height: 100px;
      display: block;
    }
  }

  .goods-item-right {
    display: flex;
    flex: 1;
    flex-direction: column;
    justify-content: space-between;
  
    .goods-name {
      font-size: 13px;
    }
  
    .goods-info-box {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
  
    .goods-price {
      font-size: 16px;
      color: #c00000;
    }
  }
}
</style>
